Review on Precision Calibration with Adam Equipment's Stainless Calibration Weight by Mario Beaklini

Good weight. If you really need a Class 1 kettlebell, the two-year certification can be a problem. - If you need a class 2 weight for a 500g scale that measures down to 0.01g, this works great. - The kettlebell arrived with no obvious stains and no fingerprints from previous mishandling. - I used a plastic bag to carry the weight to avoid getting oil from my skin onto the weight. Now my scale thinks it's actually 500.00g. Imagine after using them to calibrate the scale! (Yes I know. It was a joke). Reasonable price for a real $20 calibration weight for my scale. Now the production of scales could catch up with modern technology in the field of scales in order to lower the price of the calibration weight. Great scale for this weight: https://www.amazon.com/gp/product/B00CFP0NFA/